<!DOCTYPE html>
<html>

<head>
  <meta charset='utf-8'>
  <meta http-equiv='X-UA-Compatible' content='IE=edge'>
  <title>MVVM</title>
  <meta name='viewport' content='width=device-width, initial-scale=1'>
</head>

<body>
  <div id="app">
    <input type="text" v-model="name">
    <p>{{name}}</p>
    <button @click="handlerClick">改变数据</button>
  </div>
</body>

</html>